【摘要】 以正硅酸乙酯(TEOS)、γ-缩水甘油醚氧丙基三甲氧基硅烷(GPTMS)、甲基三乙氧基硅烷(MTES)和十七氟癸基三甲氧基硅烷(FAS)为前驱体,通过溶胶凝胶法分别独立制备3种特性不同的溶胶。然后,通过逐次浸涂,依次构筑涂层的基底层、结构层和修饰层。最后,经过一次热处理工艺制备出复合超疏水涂层。采用扫描电镜,原子力显微镜对涂层的表观形貌进行表征,紫外-可见光谱和水接触角测量仪表征涂层的可见光透过率和疏水性能,同时测试了涂层的硬度,附着力等机械性能。结果表明,涂层对水接触角可达155°,可见光透过率高于70%。更多还原

【Abstract】 A three-layer composite super-hydrophobic coating was developed by tetraethylorthosilicate(TEOS), 3-glycidoxypropyl-trime thoxysilane(GPTMS), methyltrithoxy-silane(MTES) and Heptadecaflro-1,1,2,2-tetradecyltrimethoxysilane(FAS). Firstly, three different sols were prepared by sol-gel process. Then, with the dip-coating method and heat-treatment process, the three sols were sequentially applied to construct the underlying layer, structure layer, and modifying layer. The morphologies, optical transparency, mechanical properties, and hydrophobicity of the films were analyzed by scanning electron microscopy, atomic force microscopy, and ultraviolet–visible spectroscopy as well as hardness, adhesion, and water contact angle measurement. The results show that the composite coating possesses a contact angle as high as 155° and a visible light transmittance higher than 70%.更多还原